JPS61104299U

JPS61104299U -

Info

Publication number: JPS61104299U
Application number: JP19056584U
Authority: JP
Priority date: 1984-12-15
Filing date: 1984-12-15
Publication date: 1986-07-02

Description

[Brief explanation of drawings]

第１図ａは、本考案の一実施例のストラツトの
斜視図、同じくｂはストラツトボス部の側面図、
第２図は多軸船ストラツト後部プロペラ面での流
速分布図、第３図は不均一な流れの中でのプロペ
ラ翼断面に流入する流れの迎角αとＶｘ（船体方
向流速）との関係を示す図、第４図及び第５図は
第１図ｂのストラツト及びボス相当のストラツト
及びボスの後縁にジエツト水流流出孔と、前縁に
空気吹出し孔を設けた側面図、第６図は船側から
空気を吹き出すマスカー法を示す側面図、第７図
はプロペラの前縁から空気を気泡として吹き出す
（プレイリープロペラ法）を示す図である。図において、１……ジエツト水流流出孔、２…
…空気吹出し孔、３……ストラツト、４……スト
ラツトボス部、５……プロペラ軸、６……プロペ
ラ、７……プロペラ面、８……気泡、９……ジエ
ツト水流。 FIG. 1a is a perspective view of a strut according to an embodiment of the present invention, and FIG. 1b is a side view of a strut boss.
Figure 2 is a flow velocity distribution diagram on the rear propeller surface of a multi-shaft ship strut, and Figure 3 is the relationship between the angle of attack α of the flow flowing into the propeller blade cross section in a non-uniform flow and Vx (flow velocity in the hull direction). Figures 4 and 5 are side views of the struts and bosses corresponding to the struts and bosses in Figure 1b, with jet water outflow holes on the rear edges and air blow holes on the front edges, and Figure 6. 7 is a side view showing the masker method in which air is blown out from the ship's side, and FIG. 7 is a diagram showing the method in which air is blown out as bubbles from the leading edge of the propeller (prairie propeller method). In the figure, 1...Jet water flow outlet hole, 2...
... Air blowout hole, 3 ... Strut, 4 ... Strut boss section, 5 ... Propeller shaft, 6 ... Propeller, 7 ... Propeller surface, 8 ... Air bubble, 9 ... Jet water flow.

Claims

[Scope of Claim for Utility Model Registration] In a strut-type ship, a jet water outflow hole is provided along the rear edge of the strut and the strut boss, and an air blowing hole is provided along the leading edge of the strut and the strut boss. A device for reducing propeller excitation force, etc., characterized by: